The Vision Pro doesn't exactly seem to have reached what I would normally think of as mass production so I wouldn't be surprised if the scale doesn't really work for them yet.

That said, with raw numbers like this I always have to think of the teardown of the Juicero which revealed that it used numerous custom parts that certainly made it very expensive to manufacture: https://blog.bolt.io/juicero/

The catch with Juicero of course is that while the parts were very expensive, it could have been made much cheaper by using standard parts instead of the custom ones. I'm not saying that's the case here but it's worth taking these things with a grain of salt.